Forces

Question 1

Define a force.

Answer 1

Any push, pull or twist that acts on object.

Question 2

In what unit are forces measured?

Answer 2

Newtons

Question 3

What are the 3 types of contact forces?

Answer 3

Push/Pull, Friction

Question 4

Define friction

Answer 4

A force that opposes motion

Question 5

List methods to reduce friction

Answer 5

• Lubrication
• Smoother surfaces
• Using rollers or ball bearings

Question 6

What are the three types of non-contact forces?

Answer 6

Magnetic, Gravity, Electrostatic

Question 7

True or False: Similar poles of magnets attract each other.

Answer 7

False

Question 8

True or False: Opposite poles of magnets repel each other.

Answer 8

False

Question 9

How can forces be represented visually?

Answer 9

Using arrows

Question 10

What does the length of an arrow in a force diagram indicate?

Answer 10

The magnitude of that force

Question 11

Describe a scenario where movement occurs

Answer 11

Forces are unbalanced

Question 12

Describe a scenario where no movement occurs

Answer 12

All forces are balanced

Question 13

Fill in the blank: A force that opposes motion is called _______.

Answer 13

Friction

Question 14

Fill in the blank: Forces that do not require contact to act are known as _______.

Answer 14

Non-contact forces